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be as little as $2.25 or as much as $10.94 added on to each ton of <br />coal mined. As I do not enforce the Colorado River salinity <br />standard, I have no idea as to what to do at this juncture. The <br />facts are: the mine is way over it's CDPES limit in salt loading, <br />and the costs to bring the operation into compliance may lead to a <br />mine closure. What to do? Is there a partial solution besides <br />these costly alternatives, perhaps just one discharge point could <br />install a Reverse osmosis device, phasing in the other two over <br />time. Since the costs per ton of mined coal decrease as the <br />quantity of coal mined increases, then additional RO devices may be <br />stipulated as the mine increases its contractual obligations. <br />I don't know. Steve, what do you think? <br />